Trick knife



l atent-ed Feb, 13, 51923.

rarer: KNIFE.

Application filed March 29, 1820.

To all whom it may concern:

Be it known that I. THnonoRE 13. Son 1 :irrrr, citizen of the United States, residing at Scranton, in the county of Lackawanna and State of Pennsylvania, have invented certain new and useful improvements in Trick Knives; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to the class of puzzles and magic and particularly to what are known as tricks, the main object of my invention being the provision of a trick in the form of an imitation knife wherein the blade is quickly and readily closed into the handle of the knife without the necessary manipulation of the blade by the use of the hand.

Another object of the presentinvention is the provision of a trick knife adapted to be held in the hand, with the blade open and grasping the handle near the pivoted end of the blade and releasing the handle with the second mentioned hand quickly to thus convey a quick upward movement of the end of the handle to which the blade is pivoted whereby the blade will be quickly closed into the handle.

A further object of the invention is the provision of a trick knife, the handle portion of which held by one hand of the operator, while the other hand grasps the handle at the point where the blade pivotally connected thereto by forefingerof this hand and by grasping the blade at this point with the thumb and forefinger and quickly releasing the same by a downward movement of the hand, the blade of the knife will be quickly moved to its closed position Within the handle.

With the above and other objects in view, the invention consists in the. novel features and construction, the combination and arrangement of parts hereinafter more fully set forth, pointed out in the claim and shown in the accompanying drawings, in which Figure l is a longitudinal sectional view of my improved trick knife, the blade being illustrated in an open position and in a closed position by the dotted lines, and

Figure 2 is a side elevation illustrating the position of the knife with respect to the hands of the operator when it is desirecl'to movethe blade to a closed position.

v quickly fly shut or to the thumb and ferrule 7 so as to thus I withdrawn from Serial No. 369,684.

In the general construction of my i1l1lproved trick knife I ber generally indicated by the numeral. 1, having a longitudinal groove 2 to receive the blade 3 when in a closed position. handle 1. comprises a central enlarged body portion having at one end a reduced extension 4 terminating into a knob 5 at one end, while the other end terminates into a reduced neck portion 6 having a ferrule '7 mounted thereon which is adapted to reenforce the neck portionv 6 and support the pivot pin 8 upon which the blade 3 is mounted.

he inner reduced end 9 of the blzule S is arranged within the outer end of the groove 2 and loosely mounted upon the transverse pivot pin 8 so that the blade has a free movement when being swung to either an open or a closed position. Particular attention is directed to the fact that theblade 3 .can be quickly movedto a closed position through any slight upward inner end of the handle.

In order to operatethe knife so as to provide a suitable trick in the closing of the blade 3 without touching the same by the hands of the operator, the outer end of the handle portion is grasped by the left hand as illustrated in Figure 2 while the ferrule 7 is held between the thumb and. forefinger of the other hand and by suitimovement of the clent pressure and quick downward movement of the thumb and forefinger on the. ferrule 7, the blade 3 will be caused to a closed position as illustrated in dottedlines in Figure 52. The

operator may. if he desirosto cover the trick of closing the knlite or to distract the attention. of an audience, make believe blowing the blade shut and, at the same time, quickly removing the thumb and forefinger from the cover the real operation of the trick. It will be apparent that as the thumb and forefinger are quickly the ferrule 7 by a slight snapping movement, the inner end of the handle will be vibrated upwardly giving a jerk to the blade 3 which will quickly throw the same to a closed position.

From the above description taken in con nection with the accompanying drawings, it will be readily apparent that I have provided a simple and durable trick knife which can be operated with the minimum of practice by simply grasping the handle of the knife with the hands in the position set provide a handle mem- The , of the hands quickly forth above and by the manipulation of one throw the blade 3 to its closed position Within the groove 2 of the handle. c

hat I claim is: a

A device of the class described including a handle provided With a longitudinal groove, a split reinforcing; ferrulemounted on one end of the handle, a blade member having one end loosely mounted within one end of the groove and normally arranged position whereby the blade is actuated to move the same to its normal closed position through a vibrating movement manually imparted to the handle at the pivot point of the blade.

in testimony whereof I aflixmy signature. 2O

THEODORE B. ECHIMPFF. 

